Re: [PATCH v6 1/4] sgl_alloc_order: remove 4 GiB limit, sgl_free() warning

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Jan 19, 2021 at 06:24:49PM +0100, Bodo Stroesser wrote:
> 
> I had a second look into math.h, but I don't find any reason why round_up
> could overflow. Can you give a hint please?

#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
                                                    ^^^^^

That +1 can overflow

It looks like it would not be so bad to implement some
check_round_up_overflow() if people prefer

Jason



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]

  Powered by Linux